@cassidoo's interview question from June 11, 2023

trimArray.sh

#!/usr/bin/env bash
set -eu -o pipefail

trimArray () {
	arrayName=$1[@]
	n=$2
	m=$3
	array=("${!arrayName}")
	
	echo -e "begin:\t[${array[@]}], $n, $m"

	# left trim
	array=("${array[@]:$n}")
	
	# right trim
	array=("${array[@]:0:${#array[@]} - $m}" )
	
	echo -e "done:\t[${array[@]}], $n, $m"
}

declare -a array1=( 1 2 3 4 5 6 )
declare -a array2=( 6 2 4 3 7 1 3 )
declare -a array3=( 1 7 )

trimArray array1 2 1	# [3, 4, 5]
trimArray array2 5 0	# [1, 3]
trimArray array3 0 0	# [1, 7]

MONTASIO:cassidoo andrewrich$ ./trimArray.sh 
begin:	[1 2 3 4 5 6], 2, 1
done:	[3 4 5], 2, 1
begin:	[6 2 4 3 7 1 3], 5, 0
done:	[1 3], 5, 0
begin:	[1 7], 0, 0
done:	[1 7], 0, 0